在图像中值滤波中包括两方面，一是滤波窗口的确定，二是滤波算法的实现。采用了VC编码来实现了中值滤波-Median filter in image includes two aspects, first, determine the filter window, and the other is the realization of filtering algorithm. VC coding used to achieve a median filter

将lena图像施加Pa=Pb=0.1的椒盐噪声，然后采用3*3中值滤波处理，给出去噪前后的图像。-The lena image put Pa = Pb = 0.1 of the salt and pepper noise, then a 3* 3 median filter processing, the image is given before and after denoising.